Music – Instruments – Electrical musical tone generation
Patent
1995-08-08
1997-07-15
Wysocki, Jonathan
Music
Instruments
Electrical musical tone generation
84600, 84645, 84744, G10H 132
Patent
active
056486308
ABSTRACT:
A polyphonic electronic musical instrument is provided including a keyboard, an information processing system, e.g., a microprocessor-controlled computer system, and a tone generating device. The processing system processes data received from the keyboard and sends note-on
ote-off commands to the tone-producing device. The processing system groups keys of the keyboard into "key sets". Keys within each set occupy different rows of the keyboard. The processing system commands the tone generating device to effectively produce not more than one tone corresponding with each key set at any one time regardless of how many keys within the set are depressed. A key set may operate in "sustain mode," in which depression of a first key produces a tone which sustains without interruption as long as at least any one key of the same set is in depressed position. Alternately, a key set may operate in "repetition mode." In this mode, depression of a key as a previously depressed key of the same set is held down causes the tone of the previously depressed key to mute and another tone corresponding with the newly depressed key to trigger. The two tones may be identical. A mode select function is provided whereby the user may alternate between sustain and repetition modes for one or more key sets. The preferred embodiment utilizes a 5-row Janko Keyboard with independently-moving keys.
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Donels Jeffrey W.
Wysocki Jonathan
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